Key Parameters

• Engine Code: M156 (6.2L V8)

• Displacement: 6,208 cc

• Power Output:

  • Standard: 451–525 HP (varies by tune)

  • Torque: 443–630 Nm (327–465 lb-ft) @ 5,200 RPM

• Compression Ratio: 11.3:1 (requires premium 98 RON fuel)

• Valvetrain: DOHC, 32-valve with variable valve timing (VVT)

• Fuel System: Sequential port injection (no direct injection)

• Block/Head: Aluminum block & heads with sodium-filled exhaust valves

• Redline: 7,200 RPM

• Oil Capacity: 9.0L (AMG-approved Mobil 1 0W-40 recommended)

• Emissions: Euro 4/5 compliant

Selling Points

• Legendary AMG Performance – The M156 is a 6.2L naturally aspirated V8 developed by AMG, delivering 

• 451–525 HP (varies by model) and thrilling throttle response.

• High-Revving Thrill – Redline at 7,200 RPM, with a linear powerband and intoxicating exhaust note.

• Wide Compatibility – Fits multiple AMG 63-series models, including:

  • C63 AMG (W204) – 451 HP (2008–2014)

  • E63 AMG (W211/W212) – 514–525 HP (2006–2011)

  • S63 AMG (W221) – 525 HP (2007–2010)

  • ML63 AMG (W164) – 503 HP (2006–2011)

• No Turbo Lag – Naturally aspirated design provides instant power delivery (vs. modern turbocharged AMGs).

• Strong Aftermarket Support – Popular for tuning (ECU remaps, headers, cams) to push 550+ HP.

• Durable Internals – Forged crankshaft, high-flow aluminum heads, and reinforced pistons for high-RPM

• endurance.